US4389561A - Self-positioning welding or cutting torch - Google Patents

Self-positioning welding or cutting torch Download PDF

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Publication number
US4389561A
US4389561A US06/277,989 US27798981A US4389561A US 4389561 A US4389561 A US 4389561A US 27798981 A US27798981 A US 27798981A US 4389561 A US4389561 A US 4389561A
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United States
Prior art keywords
tip
torch
sensing body
sensor
welding
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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US06/277,989
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English (en)
Inventor
Klas B. Weman
Hans E. A. Grohn
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ESAB AB
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ESAB AB
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Assigned to ESAB AKTIEBOLAG reassignment ESAB AKTIEBOLAG ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GROHN, HANS E. A., WEMAN, KLAS B.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/14—Control or regulation of the orientation of the tool with respect to the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • B23Q15/22—Control or regulation of position of tool or workpiece

Definitions

  • This invention relates to sensors which are used to detect and determine the relative position of a workpiece with respect to the tip of a torch, such as a welding or cutting torch, of the type which is movable in various and optional directions by positioning devices.
  • Sensors of this general type are provided with an arm which, at one end, carries a sensing body which is intended and adapted to make contact with the workpiece.
  • a housing is affixed to the end of the torch so that the arm can be swiveled in at least two different planes.
  • the arm is provided with devices which are adapted to cooperate with devices fitted within the housing to generate control signals. These control signals affect the positioning devices in a manner which corresponds to the swiveling displacement of the arm relative to a pre-determined neutral position of the arm.
  • Sensors of this general type can also be used in conjunction with "robots", i.e., devices for the fully automatic handling of tools and workpieces in accordance with a given program.
  • robots i.e., devices for the fully automatic handling of tools and workpieces in accordance with a given program.
  • Such robots are presently used extensively in the welding field. Through the use of such a robot, the welding torch is guided from an initial position to the starting point of the welding joint and from there along the welding joint according to a pre-determined program.
  • the sensor detects the actual direction of the welding joint which, as a result of tolerances, generally deviates somewhat from the direction prescribed in the program.
  • the robot is programmed to adapt to the actual conditions.
  • Such robots are also used extensively in the mass production of workpieces which, in some instances, are conveyed to and placed upon the workplace by another robot.
  • the workpiece does not always occupy the same position on the workplace and may also be subject to manufacturing and installation tolerances.
  • the position of the welding joint may be different for each workpiece.
  • the robot Before commencing the welding work, the robot must perform a special localization movement to locate the starting point of the welding joint. To exactly position the workpiece it is generally necessary and required that localization be performed in three directions or planes. To perform this localization, the tip with the sensor is taken to the vicinity of the workpiece and the feeler of the sensor is caused to successively make contact with three selected surfaces of the workpiece in the vicinity of the starting point of the welding joint.
  • the senor Upon making contact with the surfaces, the sensor generates signals which are processed in the robot's computer to determine the position of the starting point. This procedure presupposes that the position of the starting point can be defined with the help of these surfaces; by and large, this is always possible with adequate accuracy.
  • a feeler which is fitted asymmetrically with respect to the tip such as the prior art devices shown in the patents referred to above, must be capable of rotating around the axis of the tip so that it can be made effective in the aforesaid three directions of localization. Since one of the degrees of freedom of the robot must be set aside for rotary motion of the tip and therefore cannot be utilized in this operation, the field of application for such robots is limited.
  • sensors of the type shown in the aforementioned patents have inherent limitations, in that the sensor can only be located on one side of the welding head at any given instant. Thus, such prior art devices are incapable of detecting the proximity of objects which, at any given moment, are located on a side of the welding tip other than the side on which the sensor is presently located.
  • an object of the present invention to provide a new and improved sensor for use in ascertaining the relative position of a workpiece with respect to the tip of a welding torch or similar device.
  • the sensing body surrounds the tip of the torch and is displaceable relative to the tip upon contracting a surface of the workpiece at any point about the periphery of the tip.
  • a connecting means is mounted to the sensing body to be displaced therewith in a direction and to a degree corresponding to the displacement of the sensing member.
  • Means are provided for detecting the displacement of the connecting means and generating a signal corresponding therewith for positioning the torch in response to the aforesaid signal.
  • FIG. 1 is an elevational view showing the front portion of a robot arm, together with a welding torch to which is mounted a sensor embodying the present invention
  • FIG. 2 is a partial section view of a sensor of the present invention which is mounted to a welding torch;
  • FIG. 3 is a schematic isometric view of the sensor which is partially cut away to illustrate the internal construction thereof.
  • FIG. 4 is an isometric view showing a welder with the sensor mounted thereto in operation on a workpiece.
  • a robot arm 1 as shown in FIG. 1, comprises two sections 2, 3, having axes which are at right angles to each other.
  • the design and mode of operation of such robots is described in extensive literature and is not considered part of the present invention.
  • the end of the robot arm 1 is provided with a holder 4 and a clamping member 5 to which is clamped a handle 6 of a welding torch, generally designated as 7.
  • the holder 4 and the clamping member 5 are provided with slots 8, 9 and locking screws 10, 11 for fixing the welding torch in a suitable position which is chosen with a view toward the operating movement of the robot.
  • the tip 12 of the welding torch or welding head is connected by means of a curved electrode lead tube 13 to the handle 6.
  • a sensor 14 is attached to the electrode lead tube 13 by means of a clamp 15. As best illustrated in FIG. 2, the sensor 14 includes a housing 16 having a front supporting ring 17. The supporting ring 17 abuts and supports a conical washer 18 which, in turn, is fixed to an arm 19. The arm 19 acts as a connecting member and is affixed to and carries on its front end a ring 20.
  • the ring 20 acts as a sensing body and is constructed and arranged to surround the welding tip 12 in its central opening. The ring 20 is adapted to make contact with objects on any side of its central opening and to be displaced by such objects.
  • the ring 20 is annular and is preferably substantially circular.
  • the conical washer 18 is biased and pressed against the supporting ring 17 by a spring 22, which is mounted between the washer 18 and rear supporting ring 21.
  • the arm 19 can be swiveled in at least two different planes and preferably in all directions around the inside edge 23 of the supporting ring 17.
  • the washer 18 remains seated symmetrically against the supporting ring 17.
  • the ring 20 remains positioned in a central or starting position which is substantially coaxial with the welding tip 12.
  • the portion of arm 19 within the housing 16 is substantially parallel to and coextensive with the central axis of the housing 16.
  • the displacement of the arm 19 is in a direction and is to a degree which corresponds to the displacement of the sensing body or ring 20 from its central or starting position.
  • a permanent magnet 24 which cooperates with four magnetodynamic resistances 26 mounted symmetrically on a plate 25 in the form of a ring.
  • the permanent magnet 24 points toward the center of the four resistances 26. In this position, the sensor is in its neutral position and the magnetodynamic resistances 26 are influenced equally by the permanent magnet 24.
  • the magnetodynamic resistances 26, in conjunction with the permanent magnet 24, act as a means for detecting the angular displacement of the arm 19 relative to its starting position and generating a signal which corresponds to that displacement.
  • the resistances 26 are connected in a conventional manner to control circuits, which respond to the signal generated by the position of the permanent magnet 24 and act upon the positioning mechanisms of the robot to adjust the position of the welding tip or head 12. Circuits similar to those used with the present invention have been described in the two patents referred to above, and the control circuitry and its connections do not form any part of the present invention.
  • FIG. 4 A generally horizontal workpiece 27 and a generally vertical workpiece 28 form a fillet joint defined generally by the line A-B.
  • the sensor ring 20 is in contact during the welding with joint surface 29 of the workpiece 27 and joint surface 30 of workpiece 28. If the robot is programmed for a straight welding joint between points A and B, the sensor 14 is influenced or activated only if the joint to be welded deviates from the direction which has been programmed.
  • the two workpieces 27, 28 are set up on a working table 31 or the like.
  • the starting point for welding must be localized anew each time, since the workpieces inevitably will be not be placed in exactly the same positions.
  • the welding torch guided by the robot is taken successively toward the surfaces 29, 30 and an end surface 32 of one of the workpieces 27 or 28.
  • An example of possible directions of localization for the workpiece 27, 28 is illustrated in FIG. 4 by the three arrows 33, 34 and 35 which are directed, respectively, toward the surfaces 29, 30 and 32.
  • the robot continues to localize in an appropriate direction until it make contact with the second surface and, finally, with the third surface.
  • the welding torch follows the welding joint to point B according to the program stored in the robot.
  • the sensor 14 is used as a joint follower, the torch proceeds to point B according to the signals transmitted in a known manner by the sensor 14 to the robot, which signals correspond to the relative position of the torch with respect to the welding joint.
  • the sensor ring 20 does not detect the true position of the welding point 36, but only detects the position indirectly by making contact with the workpiece at a point which is in the vicinity of the joint, albeit not exactly at the joint. For this reason, it is advantageous to place the sensor ring 20 as near as possible to the front end of the welding tip 12. This will have the effect of limiting any error which may arise through the indirect determination of position just described, which is often called parallax error. When the ring 20 is positioned as close or as proximate to the welding tip as possible, such error is very small and is of no significance with respect to the quality of the weld.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Arc Welding In General (AREA)
US06/277,989 1980-07-03 1981-06-26 Self-positioning welding or cutting torch Expired - Fee Related US4389561A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8004926A SE422291B (sv) 1980-07-03 1980-07-03 Sensor
SE8004926 1980-07-03

Publications (1)

Publication Number Publication Date
US4389561A true US4389561A (en) 1983-06-21

Family

ID=20341367

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/277,989 Expired - Fee Related US4389561A (en) 1980-07-03 1981-06-26 Self-positioning welding or cutting torch

Country Status (7)

Country Link
US (1) US4389561A (enrdf_load_stackoverflow)
JP (1) JPS601891Y2 (enrdf_load_stackoverflow)
DE (2) DE8118200U1 (enrdf_load_stackoverflow)
FR (1) FR2485971A1 (enrdf_load_stackoverflow)
GB (1) GB2079472B (enrdf_load_stackoverflow)
IT (1) IT1137595B (enrdf_load_stackoverflow)
SE (1) SE422291B (enrdf_load_stackoverflow)

Cited By (53)

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US4514616A (en) * 1984-09-11 1985-04-30 Rumble Equipment Limited Safety mounting device
US4540869A (en) * 1982-02-26 1985-09-10 Mitsubishi Denki Kabushiki Kaisha Welding torch
US4697472A (en) * 1982-09-25 1987-10-06 Fujitsu Limited Multi-articulated robot
US4711985A (en) * 1986-12-24 1987-12-08 Cincinnati Milacron Inc. Interference detector for laser cutting machine
US4733048A (en) * 1987-07-17 1988-03-22 Raycon Textron Inc. Crash proof nozzle
US4935597A (en) * 1985-12-20 1990-06-19 Kuka Schweissanlagen & Roboter Gmbh Process and a device for finding and following a hollow weld in shielded arc welding
US5307946A (en) * 1993-03-24 1994-05-03 Northern Engineering & Plastics, Corp. Neck finish for a container and a matching registering multiple thread pattern in a flexible cap for engagement on neck said finish
US5562843A (en) * 1991-12-28 1996-10-08 Joven Electric Co., Ltd. Industrial robot with contact sensor
US5612785A (en) * 1996-01-03 1997-03-18 Servo Robot Inc. Twin sensor laser probe
US6234232B1 (en) 1998-06-01 2001-05-22 Aim Automotive Integrated Manufacturing, Inc. Robotic apparatus and method for assembling a tire to a rim
US20080314887A1 (en) * 2005-07-15 2008-12-25 Markus Stoger Welding Method and Welding System With Determination of the Position of the Welding Torch
US20090253563A1 (en) * 2008-04-08 2009-10-08 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tool replacing device
US9067271B2 (en) 2012-12-14 2015-06-30 Illinois Tool Works Inc. Devices and methods for indicating power on a torch
CN106104655A (zh) * 2014-01-07 2016-11-09 伊利诺斯工具制品有限公司 用于焊接系统的校准工具和方法
US9583023B2 (en) 2013-03-15 2017-02-28 Illinois Tool Works Inc. Welding torch for a welding training system
US9583014B2 (en) 2012-11-09 2017-02-28 Illinois Tool Works Inc. System and device for welding training
US9589481B2 (en) 2014-01-07 2017-03-07 Illinois Tool Works Inc. Welding software for detection and control of devices and for analysis of data
US9636768B2 (en) 2012-12-14 2017-05-02 Hobart Brothers Company Devices and methods for providing information on a torch
US9666100B2 (en) 2013-03-15 2017-05-30 Illinois Tool Works Inc. Calibration devices for a welding training system
US9672757B2 (en) 2013-03-15 2017-06-06 Illinois Tool Works Inc. Multi-mode software and method for a welding training system
US20170167902A1 (en) * 2015-12-13 2017-06-15 J. Thielmann Gesellschaft Fuer Automatisierungstechnik Mbh Arrangement for Measuring the Quantity of Protective Gas
US9713852B2 (en) 2013-03-15 2017-07-25 Illinois Tool Works Inc. Welding training systems and devices
US9724787B2 (en) 2014-08-07 2017-08-08 Illinois Tool Works Inc. System and method of monitoring a welding environment
US9724788B2 (en) 2014-01-07 2017-08-08 Illinois Tool Works Inc. Electrical assemblies for a welding system
US9728103B2 (en) 2013-03-15 2017-08-08 Illinois Tool Works Inc. Data storage and analysis for a welding training system
US9751149B2 (en) 2014-01-07 2017-09-05 Illinois Tool Works Inc. Welding stand for a welding system
US9862049B2 (en) 2014-06-27 2018-01-09 Illinois Tool Works Inc. System and method of welding system operator identification
US9875665B2 (en) 2014-08-18 2018-01-23 Illinois Tool Works Inc. Weld training system and method
US9937578B2 (en) 2014-06-27 2018-04-10 Illinois Tool Works Inc. System and method for remote welding training
US10056010B2 (en) 2013-12-03 2018-08-21 Illinois Tool Works Inc. Systems and methods for a weld training system
US10096268B2 (en) 2011-08-10 2018-10-09 Illinois Tool Works Inc. System and device for welding training
US10105782B2 (en) 2014-01-07 2018-10-23 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US10170019B2 (en) 2014-01-07 2019-01-01 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US10204406B2 (en) 2014-11-05 2019-02-12 Illinois Tool Works Inc. System and method of controlling welding system camera exposure and marker illumination
US10210773B2 (en) 2014-11-05 2019-02-19 Illinois Tool Works Inc. System and method for welding torch display
US10239147B2 (en) 2014-10-16 2019-03-26 Illinois Tool Works Inc. Sensor-based power controls for a welding system
US10307853B2 (en) 2014-06-27 2019-06-04 Illinois Tool Works Inc. System and method for managing welding data
US10373304B2 (en) 2014-11-05 2019-08-06 Illinois Tool Works Inc. System and method of arranging welding device markers
US10373517B2 (en) 2015-08-12 2019-08-06 Illinois Tool Works Inc. Simulation stick welding electrode holder systems and methods
US10402959B2 (en) 2014-11-05 2019-09-03 Illinois Tool Works Inc. System and method of active torch marker control
US10417934B2 (en) 2014-11-05 2019-09-17 Illinois Tool Works Inc. System and method of reviewing weld data
US10427239B2 (en) 2015-04-02 2019-10-01 Illinois Tool Works Inc. Systems and methods for tracking weld training arc parameters
US10438505B2 (en) 2015-08-12 2019-10-08 Illinois Tool Works Welding training system interface
US10490098B2 (en) 2014-11-05 2019-11-26 Illinois Tool Works Inc. System and method of recording multi-run data
US10593230B2 (en) 2015-08-12 2020-03-17 Illinois Tool Works Inc. Stick welding electrode holder systems and methods
US10657839B2 (en) 2015-08-12 2020-05-19 Illinois Tool Works Inc. Stick welding electrode holders with real-time feedback features
US10665128B2 (en) 2014-06-27 2020-05-26 Illinois Tool Works Inc. System and method of monitoring welding information
US10748442B2 (en) 2008-05-28 2020-08-18 Illinois Tool Works Inc. Welding training system
US11014183B2 (en) 2014-08-07 2021-05-25 Illinois Tool Works Inc. System and method of marking a welding workpiece
US11247289B2 (en) 2014-10-16 2022-02-15 Illinois Tool Works Inc. Remote power supply parameter adjustment
US11288978B2 (en) 2019-07-22 2022-03-29 Illinois Tool Works Inc. Gas tungsten arc welding training systems
US11311958B1 (en) * 2019-05-13 2022-04-26 Airgas, Inc. Digital welding and cutting efficiency analysis, process evaluation and response feedback system for process optimization
US11776423B2 (en) 2019-07-22 2023-10-03 Illinois Tool Works Inc. Connection boxes for gas tungsten arc welding training systems

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Cited By (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540869A (en) * 1982-02-26 1985-09-10 Mitsubishi Denki Kabushiki Kaisha Welding torch
US4697472A (en) * 1982-09-25 1987-10-06 Fujitsu Limited Multi-articulated robot
US4514616A (en) * 1984-09-11 1985-04-30 Rumble Equipment Limited Safety mounting device
US4935597A (en) * 1985-12-20 1990-06-19 Kuka Schweissanlagen & Roboter Gmbh Process and a device for finding and following a hollow weld in shielded arc welding
US4711985A (en) * 1986-12-24 1987-12-08 Cincinnati Milacron Inc. Interference detector for laser cutting machine
US4733048A (en) * 1987-07-17 1988-03-22 Raycon Textron Inc. Crash proof nozzle
US5562843A (en) * 1991-12-28 1996-10-08 Joven Electric Co., Ltd. Industrial robot with contact sensor
US5307946A (en) * 1993-03-24 1994-05-03 Northern Engineering & Plastics, Corp. Neck finish for a container and a matching registering multiple thread pattern in a flexible cap for engagement on neck said finish
US5612785A (en) * 1996-01-03 1997-03-18 Servo Robot Inc. Twin sensor laser probe
US6877544B2 (en) 1998-02-20 2005-04-12 Burke E. Porter Machinery Company Robotic apparatus and method for assembling a tire to a rim
US6234232B1 (en) 1998-06-01 2001-05-22 Aim Automotive Integrated Manufacturing, Inc. Robotic apparatus and method for assembling a tire to a rim
US8680434B2 (en) * 2005-07-15 2014-03-25 Fronius International Gmbh Welding method and welding system with determination of the position of the welding torch
US20080314887A1 (en) * 2005-07-15 2008-12-25 Markus Stoger Welding Method and Welding System With Determination of the Position of the Welding Torch
US8272645B2 (en) * 2008-04-08 2012-09-25 Kobe Steel, Ltd. Tool replacing device
US20090253563A1 (en) * 2008-04-08 2009-10-08 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Tool replacing device
US11749133B2 (en) 2008-05-28 2023-09-05 Illinois Tool Works Inc. Welding training system
US10748442B2 (en) 2008-05-28 2020-08-18 Illinois Tool Works Inc. Welding training system
US11423800B2 (en) 2008-05-28 2022-08-23 Illinois Tool Works Inc. Welding training system
US10096268B2 (en) 2011-08-10 2018-10-09 Illinois Tool Works Inc. System and device for welding training
US10417935B2 (en) 2012-11-09 2019-09-17 Illinois Tool Works Inc. System and device for welding training
US9583014B2 (en) 2012-11-09 2017-02-28 Illinois Tool Works Inc. System and device for welding training
US9636768B2 (en) 2012-12-14 2017-05-02 Hobart Brothers Company Devices and methods for providing information on a torch
US9067271B2 (en) 2012-12-14 2015-06-30 Illinois Tool Works Inc. Devices and methods for indicating power on a torch
US9672757B2 (en) 2013-03-15 2017-06-06 Illinois Tool Works Inc. Multi-mode software and method for a welding training system
US9713852B2 (en) 2013-03-15 2017-07-25 Illinois Tool Works Inc. Welding training systems and devices
US9666100B2 (en) 2013-03-15 2017-05-30 Illinois Tool Works Inc. Calibration devices for a welding training system
US9583023B2 (en) 2013-03-15 2017-02-28 Illinois Tool Works Inc. Welding torch for a welding training system
US9728103B2 (en) 2013-03-15 2017-08-08 Illinois Tool Works Inc. Data storage and analysis for a welding training system
US10482788B2 (en) 2013-03-15 2019-11-19 Illinois Tool Works Inc. Welding torch for a welding training system
US11127313B2 (en) 2013-12-03 2021-09-21 Illinois Tool Works Inc. Systems and methods for a weld training system
US10056010B2 (en) 2013-12-03 2018-08-21 Illinois Tool Works Inc. Systems and methods for a weld training system
US10964229B2 (en) 2014-01-07 2021-03-30 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US9757819B2 (en) 2014-01-07 2017-09-12 Illinois Tool Works Inc. Calibration tool and method for a welding system
US9724788B2 (en) 2014-01-07 2017-08-08 Illinois Tool Works Inc. Electrical assemblies for a welding system
US11241754B2 (en) 2014-01-07 2022-02-08 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US10105782B2 (en) 2014-01-07 2018-10-23 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US10170019B2 (en) 2014-01-07 2019-01-01 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US9751149B2 (en) 2014-01-07 2017-09-05 Illinois Tool Works Inc. Welding stand for a welding system
US10913126B2 (en) 2014-01-07 2021-02-09 Illinois Tool Works Inc. Welding software for detection and control of devices and for analysis of data
CN106104655B (zh) * 2014-01-07 2019-10-08 伊利诺斯工具制品有限公司 用于焊接系统的校准工具和方法
US9589481B2 (en) 2014-01-07 2017-03-07 Illinois Tool Works Inc. Welding software for detection and control of devices and for analysis of data
CN106104655A (zh) * 2014-01-07 2016-11-09 伊利诺斯工具制品有限公司 用于焊接系统的校准工具和方法
US11676509B2 (en) 2014-01-07 2023-06-13 Illinois Tool Works Inc. Feedback from a welding torch of a welding system
US12131663B2 (en) 2014-06-27 2024-10-29 Illinois Tool Works Inc. System and method of monitoring welding information
US10665128B2 (en) 2014-06-27 2020-05-26 Illinois Tool Works Inc. System and method of monitoring welding information
US9937578B2 (en) 2014-06-27 2018-04-10 Illinois Tool Works Inc. System and method for remote welding training
US10307853B2 (en) 2014-06-27 2019-06-04 Illinois Tool Works Inc. System and method for managing welding data
US10839718B2 (en) 2014-06-27 2020-11-17 Illinois Tool Works Inc. System and method of monitoring welding information
US9862049B2 (en) 2014-06-27 2018-01-09 Illinois Tool Works Inc. System and method of welding system operator identification
US11014183B2 (en) 2014-08-07 2021-05-25 Illinois Tool Works Inc. System and method of marking a welding workpiece
US9724787B2 (en) 2014-08-07 2017-08-08 Illinois Tool Works Inc. System and method of monitoring a welding environment
US11475785B2 (en) 2014-08-18 2022-10-18 Illinois Tool Works Inc. Weld training systems and methods
US9875665B2 (en) 2014-08-18 2018-01-23 Illinois Tool Works Inc. Weld training system and method
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SE422291B (sv) 1982-03-01
SE8004926L (sv) 1982-01-04
JPS601891Y2 (ja) 1985-01-19
FR2485971A1 (fr) 1982-01-08
IT1137595B (it) 1986-09-10
IT8122745A0 (it) 1981-07-03
GB2079472B (en) 1984-03-07
DE3124528A1 (de) 1982-07-08
JPS5716272U (enrdf_load_stackoverflow) 1982-01-27
DE8118200U1 (de) 1981-10-29
FR2485971B1 (enrdf_load_stackoverflow) 1984-06-29
GB2079472A (en) 1982-01-20

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